//
//  WLUserAccount.swift
//  weibo
//
//  Created by 刁 海瑞 on 16/8/11.
//  Copyright © 2016年 毋磊. All rights reserved.
//

import UIKit

class WLUserAccount: NSObject, NSCoding {
//    用户授权的唯一票据
    var access_token : String?
    var expires_in: NSTimeInterval = 0 {
        didSet {
            
//            过期时间 = 获取accesstoken那一刻起的时间 + 过期秒数
            expiresDate = NSDate().dateByAddingTimeInterval(expires_in)
        }
    }
//    过期时间
    var expiresDate: NSDate?
    
//    授权用户的UID
    var uid: Int64 = 0
//    用户名
    var name: String?
//    头像
    var avatar_large: String?
    
//    kvc构造函数
    init(dic: [String: AnyObject]) {
        super.init()
        setValuesForKeysWithDictionary(dic)
    }
    
//    防止字段不匹配
    
    override func setValue(value: AnyObject?, forUndefinedKey key: String) {
        
    }
//    重写description
    override var description: String {
        
        let keys = ["access_token", "expires_in", "uid", "name", "avatar_large"]
        return dictionaryWithValuesForKeys(keys).description
        
    }
//    归档
    func encodeWithCoder(aCoder: NSCoder) {
        
        aCoder.encodeObject(access_token, forKey: "access_token")
        aCoder.encodeObject(expiresDate, forKey: "expiresDate")
        aCoder.encodeInt64(uid, forKey: "uid")
        aCoder.encodeObject(name, forKey: "name")
        aCoder.encodeObject(avatar_large, forKey: "avatar_large")

    }
//    解档
    required init?(coder aDecoder: NSCoder) {
        access_token = aDecoder.decodeObjectForKey("access_token") as? String
        expiresDate = aDecoder.decodeObjectForKey("expiresDate") as? NSDate
        uid = aDecoder.decodeInt64ForKey("uid")
        name = aDecoder.decodeObjectForKey("name") as? String
        avatar_large = aDecoder.decodeObjectForKey("avatar_large") as? String
        
    }
//    调用该方法保存用户对象到指定沙盒路径
    func saveUserAccount() {
        
        let path = (NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last! as NSString).stringByAppendingPathComponent("userAccount.archive")
//        执行归档
        NSKeyedArchiver.archiveRootObject(self, toFile: path)
        
    }
    
//    类函数
    class func loadUserAccount() -> WLUserAccount? {
        
//        设置保存路径
        let path = (NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last! as NSString).stringByAppendingPathComponent("userAccount.archive")
//        执行解档
        return NSKeyedArchiver.archivedDataWithRootObject(path) as? WLUserAccount
    }
    
}
